Manufacture of continuous tubings or coverings of rubber.



Patented ma 8,1900.

H. J. DOUGH'TY. v MANUFACTUREv 0F CONTINUOUS TUBINGS OR COVERINGS 0FRUBBER.

(Application filed Dec. 17, 1898.\

3 Shasta-Sheet (No Model.)

IIIIIIIIIIIIIIIIIIIIIIIII/ II'IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII No.648,930. Patenfed May 8, I900.

' H. .1. nousm'v. MANUFACTURE OF CONTINUOUS TUBlN-GS 0R GUVERINGS 0FRUBBER.

(Application filed Dg. 17, 1898.)

3 Sheets-Sheet 3.

(No Model.)

MAW H i is a detached view showing a folder with embodying myimprovement.

UNITED STATES PATENT ()rlucE.

HENRY J. DOUGHTY, OF PROVIDENCE, Rl-IODE ISLAND.

MANUFACTURE OF CONTINUOUS TUBINGS OR COVERINGS 0F RUBBER.

SPECIFICATION forming part of Letters Patent No. 648,930, dated May 8,1900.

Application filed December 17, 1898. Serial No. 699,564. (No model.)

and useful Improvem cuts in the Manufacture of Continuous Tubin gs orCoverings of Rubber, &c., of which the following is a specification.

My invention relates to the manufacture of practically-continuous tubesor coverings of rubber, caoutchouc, balata, or like soluble material;and my invention consists'in means for readily converting sheets of saidmaterial into said tubes or coverings, as fully set forth hereinafterand as illustrated in the accompanying drawings, in which s Figure 1 isa side elevation of a machine Fig. 2 is plan view of the machine inFig.1. Fig. is a longitudinal sectional elevation. Fig.

strip passing through the same. Fig. 5 is detached view showing amodified form .of folder with a core and strip passing through the same.Fig. dis a plan of Fig. 5. Figs. 7 and S are modifications of theholder.

The frame A of the machine is suitably constructed to support theoperating parts hereinafter described.

The material from which the tubes orcoverings are to be made is rolledupon a spindle or shaft 1, resting upon a roll 2, the trunnions orjournals 3 of which, as well as those of the shaft 1, extend into slotsm in the side pieces of the frame, and the roll 2 rests directly upon adriving-rolh'the shaft of which extends through the side pieces of theframe and is provided at one end with a belt-pulley 4.

In case the material of which the tubes or coverings is to be made is ofan adhesive natureas, for instance, rubber or caoutchouc or balatapreparation-superposed sheets of the rubber and a suitable fabric arewrapped together, forming a roll X, and as the material is drawn fromthis roll the sheet a of rubber is carried forward, while the sheet I)of fabric is wrapped onto the roll 2, which gradually increases indiameter as the material is drawn off from the roll X. The sheet ofmaterial on the roll X may be of any de- @emewe sired Width and may beseparated into any number of strips of a width to form the desired sizeof tubes or coverings, and in the drawings I have shown the sheet a asbeing severed into a number of strips 0., and this may be nccom plishedby any suitable cutters. As shown, the cutters 5 are disk cuttersarranged upon a'shaft 6, and a roller 7 rests upon the sheet a, pressingit downward onto the edges of the cutters, which sever the same into thestrips a as the material is brought forward in the direction of thearrow, Fig. 1. Each strip a passes over a suitable table 9 thefolder-tube B the folded materialpasses over a roll 10, the journals ofwhich turn in and into the flaring mouth of a folder-tube B of suchdimensions and shape that the fixed bearings on the frame, and beneath aY roll 13 on a shaft 12, the "journals of which extend into slots y inthe side pieces of the frame, so that the shaft 12. may play verticallyin said slot. There is a series of disks or presser-wheels 13, each ofwhich bears upon the center of. the tube and is driven by suitablegears, so as to rotate with the roll 10 and to feed and carry the stripforward. I

. Instead of depending upon a cement to connect together the edges ofthe strip, which is bent up in tubular form, and to avoid thenec'es'sity and the objections incident to overlapping the edges of thestrip I deposit upon each edge of the strip a suitable solvent which hastime to partially dissolve the material before the strip is carried intothe folder B, so that when the edges of the strip are abutted insaidfolder and held together for a time and as they are pressed underthe action of the disks 13 they will be practically united, so that thetube or covering is homogeneous throughout.

Any'suitable means may be employed for depositing the solvent upon theedges of the strip; but I prefer to make use of the cutters 5, whichrotate in a trough 16, containing a suitable amount of naphtha or othersolvent,

which adheres to the sides of the cuttercore of any kindas, forinstance, a flexible wire or cord w-the latter is directed by suitableguide-rolls-as, for instance, a roll 20, dotted lines, Fig. 1s0 as topass with the strip into the folder B, the strip being folded around thecore by the said folder. In this case instead of using the disks 13 uponashaft 12 beyond the folder, as in Figs. 1, 2, and 3, each disk ispreferably mounted upon a shaft carried by a swinging frame 21, pivotedto the holder B, which is slotted to permit the roller to pass throughand rest upon the covering-strip as it travels through the folder. Aset-screw 22 passes through the frame or bracket into a threaded socketin the holder and serves to set the frame so as cause the roller to bearwith any desired pressure upon the meeting edges of the strip.

It is not essential that the presser-disk shall bear on the outside ofthe strip. Thus in Figs. 7 and 8 I illustrate a folder B with apresser-disk 13, supported within the folder by a bracket 18, so as tobear on the inside ofthe strip at the point where the edges of thestrips are brought together.

I Without limiting myself to the precise construction and arrangement ofthe parts shown,

I claim as my invention 1. The combination in amachine for formingtubesor coverings from a sheet of soluble material, of means for supportingthe sheet, means for cutting the sheet into strips and applying asolvent to the edges of the strips, and means for abutting the oppositeedges of each strip and holding them together under pressure,substantially as set forth.

2. The combination in a machine for forming tubes or coverings ofasoluble material, of a spindle supporting a roll of said material andsuperposed textile fabric, a roller for receiving the textile fabric asthe material isunrolled, cutters for severing the strip, means forapplying a solvent to the edges of the strip, and means for folding thestrip and for holding the abutting edges together under pressure,substantially as set forth.

3. The combination in a machine for forming tubes or coverings ofsoluble material, of a roller supporting a sheet of saidmaterial, rotarycutters arranged to sever the material into strips and simultaneouslyapply a solvent tothe edges of each strip, and means for folding thestrips and bringing the opposite edges of each strip together,substantially as set forth.

4. The combination with a roll of soluble material, of a series ofcutter-disks, a roll pressing against said disks, a trough arrangedadjacent to said disks and containing asupply of solvent, and means forfolding the strips and holding the abutting edges together underpressure, substantially as set forth.

5. In a machine for forming tubes or coverings of soluble material, thecombination with a support for the material, of cutters, and a troughfor containing a solvent arranged adjacent thereto whereby the cutterssimultaneously sever the sheet into strips and apply the solvent to theedges of the strips, substantially as set forth.

6. The combination of a shaft carrying a series-of cutters, a troughbeneath the cutters, a roller bearing upon the cutters, a series offolders B, a supporting-roll and a shaft carrying a series ofpresser-disks 13, substantially as set forth.

7. The combination in a machine for forming tubes or coverings ofsoluble material, of a spindle'supportingsuperposed layers of saidmaterial and a fabric, a'roll for receiving the fabric, and means forapplying a solvent to the material and for abutting the edges underpressure, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses;

HENRY J. DO'UGlI'lY.

W'itnesses: j

A. SQMOCAUGHIN, CLARENCE A. ALDRICH.

